deps: update dependency com.google.cloud:native-image-support to v0.12.8 (#643)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:native-image-support](https://togithub.com/googleapis/java-core) | `0.12.7` -> `0.12.8` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:native-image-support/0.12.8/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:native-image-support/0.12.8/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:native-image-support/0.12.8/compatibility-slim/0.12.7)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:native-image-support/0.12.8/confidence-slim/0.12.7)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

README.md

@@ -19,20 +19,20 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-tasks</artifactId>
-  <version>2.1.5</version>
+  <version>2.1.6</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-tasks:2.1.5'
+implementation 'com.google.cloud:google-cloud-tasks:2.1.6'
 ```
 
 If you are using SBT, add this to your dependencies
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-tasks" % "2.1.5"
+libraryDependencies += "com.google.cloud" % "google-cloud-tasks" % "2.1.6"
 ```
 
 ## Authentication

samples/native-image-sample/pom.xml

@@ -84,7 +84,7 @@
           <!-- TODO: remove this when it's no longer needed -->
           <groupId>com.google.cloud</groupId>
           <artifactId>native-image-support</artifactId>
-          <version>0.12.7</version>
+          <version>0.12.8</version>
         </dependency>
         <dependency>
           <groupId>org.junit.vintage</groupId>